12542215 has 8 divisors (see below), whose sum is σ = 17200800. Its totient is φ = 8600352.

The previous prime is 12542191. The next prime is 12542227. The reversal of 12542215 is 51224521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12542215 - 2⁵ = 12542183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179140 + ... + 179209.

It is an arithmetic number, because the mean of its divisors is an integer number (2150100).

Almost surely, 2^12542215 is an apocalyptic number.

12542215 is a deficient number, since it is larger than the sum of its proper divisors (4658585).

12542215 is an equidigital number, since it uses as much as digits as its factorization.

12542215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358361.

The product of its digits is 800, while the sum is 22.

The square root of 12542215 is about 3541.4989764223. The cubic root of 12542215 is about 232.3404076861.

Adding to 12542215 its reverse (51224521), we get a palindrome (63766736).

The spelling of 12542215 in words is "twelve million, five hundred forty-two thousand, two hundred fifteen".